Oh man, this is one of the most polished games I've seen on the jam °° The controls work great, everything is aesthetically coherent which isn't easy to pull off during a jam. I think the first floor could be a little easier, almost like a tutorial for the harder bosses to make it less demotivating when failing. As of now, I do feel like the mixed genres aren't specific enough though, it feels like a metroidvania boss fight.
Nevertheless, that's an impressive entry, great job !